SOLAS requires that vessels over 500GT, excluding pleasure
yachts not engaged in trade, carry a Safe Manning Document. Owners
and operators of vessels below 500GT or those above 500GT solely engaged
for pleasure, may also choose to hold a Safe Manning Document in accordance
with the tables at Section 26.2.8 and 26.2.9. This will allow the
owner to consider a 'range and risk' approach when determining manning
levels.